package com.atguigu.security.security;

import com.atguigu.commonutils.JwtUtils;
import io.jsonwebtoken.CompressionCodec;
import io.jsonwebtoken.CompressionCodecs;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.springframework.stereotype.Component;

import java.util.Date;

@Component
//token操作工具类
public class TokenManager {
    //token有效时长
    private long tokenEcpiration = 25 * 60 * 60 * 1000;
    //加密密钥
    private String tokenSignKey = "123456";

    //1.根据用户名生成token
    public String createToken(String username) {
        String token = Jwts.builder().setSubject(username)
                .setExpiration(new Date(System.currentTimeMillis() + tokenEcpiration))
                .signWith(SignatureAlgorithm.HS512, tokenSignKey)
                .compressWith(CompressionCodecs.GZIP).compact();
        return token;
    }

    //2.根据token字符串得到用户信息
    public String getUserInfoFromToken(String token) {
        String userInfo = Jwts.parser().setSigningKey(tokenSignKey).parseClaimsJws(token).getBody().getSubject();
        return userInfo;
    }

    //3.删除token
    public void removeToken(String token) {

    }
}
